EncryptionMode Property

Summary

Indicates the encryption mode to use when updating or creating a PDF document.

Syntax

C++/CLI

Java

Python

public PDFEncryptionMode EncryptionMode { get; set; }

public PDFEncryptionMode getEncryptionMode(); 
public void setEncryptionMode( 
   PDFEncryptionMode pDFEncryptionMode 
);

public: 
property PDFEncryptionMode EncryptionMode { 
   PDFEncryptionMode get(); 
   void set (    PDFEncryptionMode ); 
}

EncryptionMode # get and set (PDFSecurityOptions)

Property Value

A PDFEncryptionMode enumeration member that specifies the encryption mode to use when updating or creating a PDF document. The default value is PDFEncryptionMode.RC40Bit.

Remarks

PDF encryption mode specifies the key size used to encrypt the PDF file when setting the UserPassword.

The encryption mode used when setting a UserPassword property, dictates whether to restrict high-quality printing. To enable high-quality printing, set PDFEncryptionMode to PDFEncryptionMode.RC128Bit encryption mode. Conversely, PDFEncryptionMode set to PDFEncryptionMode.RC40Bit disables high-quality printing. For further details about high-quality printing, refer to HighQualityPrintEnabled .

Example

using Leadtools.WinForms; 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Controls; 
using Leadtools.Drawing; 
using Leadtools.ImageProcessing; 
using Leadtools.Pdf; 
using Leadtools.Svg; 
 
 
/// This example will encrypt a PDF file with both a user password and an owner password and restrict printing. 
 
public void PDFFileSecurityOptionsExample() 
{ 
   string sourceFileName = Path.Combine(LEAD_VARS.ImagesDir, @"Leadtools.pdf"); 
   string destinationFileName = Path.Combine(LEAD_VARS.ImagesDir, @"LEAD_EncryptedNoPrint.pdf"); 
 
   PDFFile pdfFile = new PDFFile(sourceFileName); 
 
   // Set the security options 
   pdfFile.SecurityOptions = new PDFSecurityOptions(); 
   pdfFile.SecurityOptions.UserPassword = "LEAD"; 
   pdfFile.SecurityOptions.OwnerPassword = "LEAD_SECRET"; 
   pdfFile.SecurityOptions.PrintEnabled = false; 
   pdfFile.SecurityOptions.HighQualityPrintEnabled = false; 
   pdfFile.SecurityOptions.EncryptionMode = PDFEncryptionMode.RC128Bit; 
 
   // Encrypt the file by saving it to the destination file 
   pdfFile.Convert(1, -1, destinationFileName); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms